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Specialized - Photo Tube ·PhotoemissiveDetector

927

Gas-filled cesium photoelectric cell for general light detection and measurement.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
3
Nominal heater
-

Description

Mazda 927 is a gas-filled cesium photoelectric cell for light detection. The datasheet specifies anode-voltage and photocurrent limits together with sensitivity data.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
3
Nominal heater voltage
-
Nominal heater current
-
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

PhotoemissiveDetector

X-ray radiationInterelectrode capacitances
Max plate voltage
90 V
Max cathode current
0.002 mA

Gas-filled cesium photocell; gas amplification factor 10.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1960 Mazda

Published operating points and test conditions from this source.

SECTION 1

PhotoemissiveDetector

Capacitance

  • Interelectrode capacitance

    2 pF

Other

  • Mean cathode current maximum

    2 uA

  • Load resistance minimum at 90 V

    0.1 MOhm

Characteristic

  • Sensitivity at zero periods

    125 uA/lumen

  • Gas amplification coefficient

    10